One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(9,10)(11,16)(12,14)(13,15)(17,18,21,23)(19,27,28,24)(20,30,31,25)(22,26,32,29)(1,2)(3,6)(4,5)(7,8)(18,23)(19,25)(20,24)(22,32)(27,31)(28,30) involution — undirected(9,11,13,12)(10,14,15,16)(17,19,21,28)(18,24,23,27)(20,29,31,26)(22,30,32,25)(1,3,4,7)(2,6,5,8)(18,23)(19,28)(25,30)(26,29)(2,5)(6,8)(9,12,13,11)(10,14,15,16)(17,20,21,31)(18,25,23,30)(19,29,28,26)(22,27,32,24)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.